US Patent No: 7,827,226
Number of patents in Portfolio can not be more than 2000
Hybrid arithmetic logic unit
Stats
-
Nov 2, 2010
Issued date -
Aug 18, 2006
filing date -
11/506,283
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
Methods and apparatus for improving the efficiency of an arithmetic logic unit (ALU) are provided. The ALU of the invention combines the operation of a single-cycle ALU with the processing speed of a pipelined ALU. Arithmetic operations are performed in two stages: a first stage that produces separate sum and carry results in a first cycle, and a second stage that produces a final result in one or more immediately subsequent cycles. While this produces final results in two or more clock cycles, useable partial results are produced each cycle, thus maintaining a one operation per clock cycle throughput.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 6,167,421 Methods and apparatus for performing fast multiplication operations in bit-serial processors | 2 | 1998 | |
|
|
|||
| 4,811,269 Bit slice multiplication circuit | 39 | 1986 | |
|
|
|||
| 5,612,911 Circuit and method for correction of a linear address during 16-bit addressing | 17 | 1995 | |
|
|
|||
| 5,787,492 Address limit check apparatus with conditional carry logic | 7 | 1996 | |
|
|
|||
| 4,819,198 Saturable carry-save adder | 13 | 1986 | |
|
|
|||
| 6,615,228 Selection based rounding system and method for floating point operations | 3 | 2000 | |
|
|
|||
| 2006/0064,455 Processing unit having multioperand decimal addition | 5 | 2004 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 2, 2014 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 2, 2018 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 2, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |